Upconvert several targets' form factors to ARDUINO_UNO

[multiplemonomials]

Summary of changes

Targets that use the ARDUINO form factor instead of the ARDUINO_UNO form factor print a warning for every. single. source. file. that. compiles, producing an ungodly amount of warning spam in CI. This fixes it at least for the targets which we are adding CI builds for, which is a start.

Impact of changes

Old-style PinNames.h migrated to new style

Migration actions required

Documentation

None

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Pull request type

[] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[X] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

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Test results

[] No Tests required for this change (E.g docs only update)
[] Covered by existing mbed-os tests (Greentea or Unittest)
[X] Tests / results supplied as part of this PR

This fixes the warning spam based on testing in my other branch